CN203352196U - Power supply system for parallel operation of multiple large-power high-voltage diesel generator sets - Google Patents
Power supply system for parallel operation of multiple large-power high-voltage diesel generator sets Download PDFInfo
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- CN203352196U CN203352196U CN 201320473105 CN201320473105U CN203352196U CN 203352196 U CN203352196 U CN 203352196U CN 201320473105 CN201320473105 CN 201320473105 CN 201320473105 U CN201320473105 U CN 201320473105U CN 203352196 U CN203352196 U CN 203352196U
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Abstract
The utility model discloses a power supply system for parallel operation of multiple large-power high-voltage diesel generator sets. The power supply system comprises the high-voltage diesel generator sets, a high-voltage parallel operation system, a comprehensive protection device, a non-electric quantity protection device, a PT cabinet and a ground resistor cabinet. The power supply system is designed for an independent power station. Under a condition without a power grid voltage, operation states of the generator sets can be adjusted according to external factors such as operation states and electric power parameters of a main generator. Under an emergency condition or a condition that the generator sets are required to operate, the parallel operation system is automatically operated, and any one generator set or more generator sets in the system can be parallelly operated. Concentrated monitoring and logic processing for the parallel operation system are carried out by an integrated console, the generator sets are automatically accessed and removed, loads are automatically distributed, a ramp can be loaded and unloaded, the stop of automatic cooling can be controlled, and system time and timer time can be set according to service conditions and programs. The whole parallel operation system can adjust the number of the generator sets for parallel operation according to the capacity of the loads, so that electric power can be stably provided for the loads.
Description
Technical field
The utility model relates to high-pressure diesel generating set technical field, refers in particular to a kind of electric power system of many high-power high voltage diesel engine generator sets in parallel operation.
Background technology
Along with the high speed development of Chinese national economy, all trades and professions are to the protection of the demand of electric power and electric power also in continuous growth, and along with the increase of unit generate output, China has entered large unit, high voltage, supermatic epoch.The emergence power of Shang, harbour, ore deposit, harbour, island, large-scale data center, the city integrated body of large-scale high level, industrial district etc. and city peak regulation need many grid-connected ability of high-power diesel generating set to meet the requirement of load, and remote for indivedual machine rooms and actual working load spacing, adopt many traditional low pressure diesel engine generator sets in parallel operation to expose the defect of multinomial operation and transmission.The technical problem of large capacity, output more at a distance, high intelligence, high reliability emergency power supply has become the technical problem anxious to be resolved of electric power and the protection electric power of all trades and professions.
High pressure unit output current is little, can realize high-power many parallel operation, and can realize that allocation model is flexible to the high and low pressure load supplying, and the with the obvious advantage of low pressure parallel operation compared in the high pressure parallel operation, is badly in need of exploitation high-power high voltage parallel operation electric power system and substitutes low-pressure system.
Summary of the invention
The purpose of this utility model is to provide a kind of electric power system of many high-power high voltage diesel engine generator sets in parallel operation.
For achieving the above object, the utility model adopts following technical scheme:
A kind of electric power system of many high-power high voltage diesel engine generator sets in parallel operation comprises: the high-pressure diesel generating set, the high pressure combining system, comprehensive protector, non-electricity protecting device, PT cabinet and earthing resistance cabinet, this system takes six high-pressure diesel generating sets are divided into the mode of two-stage power supply, wherein the first order is comprised of five high-pressure diesel generating sets as power supply commonly used, the second level forms as high-pressure diesel generating set of stand-by power supply, this two-stage power supply separates bus with two sections and is formed in parallel, one to five is parallel to the first paragraph bus, the 6th is connected on separately on the second segment bus, be provided with mother and protect control cubicle the same period on bus, connect the hands off device.When system occurs when abnormal, the unessential load of grading automatical excision, guarantee the power supply of important load.
The high pressure combining system comprises high-tension switch cabinet, bus and feeder system, and feeder system is comprised of six high-pressure diesel generating set parallel connection by using control cubicles and an integrated console.
When the generating set parallel connection by using mode is worked, start six units after receiving enabling signal simultaneously, six unit parallel operation operation, parallel operation control system automatic detecting machine group power output size now, and control the number of units of the unit that puts into operation according to the power output size.
The mains supply comes out signal, after delay confirmation, cuts away the unit output switch automatically, autostop after the unit no-load running 5-10min of operation.
When the diesel engine unit of an operation breaks down, system can normally start all the other diesel engine unit and can parallel operation move.
Integrated console comprises load distribution module and communication module, according to the amount of capacity of load, automatically adjusts the quantity of the unit that puts into operation, realizes that parallel operation, the load to generator controlled, remote operation.
Comprehensive protector adopts microcomputer type engine differential protection, comprises the Threshold Crossing Alert of poor stream, differential quick-break, band CT breakage lock device percentage differential, CT burn out detection and locking, non electrical quantity protection, logout, RS485 communication interface.
Non-electricity protecting device comprises two sections composite voltage locking memory overcurrent protections, overload protection, negative phase-sequence overcurrent protection, zero sequence overcurrent, overvoltage protection, under-voltage protection, low-and high-frequency protection, PT break alarm.
The PT cabinet comprises voltage transformer pt, isolation knife, fuse and lightning arrester.
Earthing resistance cabinet is for limiting the generator neutral point earth current.
The technical scheme of this electric power system refers to six high-pressure diesel generating sets, five conducts power supplys commonly used wherein, one as stand-by power supply, and the technical program can be also the electric power system of two or more high-pressure diesel generating sets, wherein the X platform is as power supply commonly used, and the Y platform is as stand-by power supply.
The beneficial effects of the utility model are: adopt the mode of the relatively independent layout of two-way power supply, can connect by the hands off device as required, reduce the time of unit run with load; Single-machine capacity is large, can realize many parallel machine operations; Electric pressure is high, and output current is little, but long distance powedr transmission, and in power transmission and distribution, line loss is little; Load allocating mode is flexible, can directly to high-voltage load, power or by after transformer pressure-reducing, low-voltage load be powered; The automaticity grade is high, has protection and alarm signal function, and protection, measurement, remote control, remote signalling, the remote measurement of current collection gas system are integrated, and have realized the comprehensive automation of electrical system.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated
The electric power system parallel operation logic diagram that Fig. 1 is many high-power high voltage diesel engine generator sets in parallel operation.
The drawing reference numeral explanation
1-high-pressure diesel generating set, 2-high pressure combining system, 3-comprehensive protector, 4-non-electricity protecting device
5-PT cabinet, 6-earthing resistance cabinet.
Embodiment
As shown in Figure 1; a kind of electric power system of many high-power high voltage diesel engine generator sets in parallel operation comprises: high-pressure diesel generating set 1, high pressure combining system 2, comprehensive protector 3, non-electricity protecting device 4, PT cabinet 5 and earthing resistance cabinet 6; this system comprises six high-pressure diesel generating sets 1; wherein power supplys are commonly used in five conducts; one as stand-by power supply; one to five is parallel to the first paragraph bus; the 6th is connected on separately on the second segment bus; be provided with mother and protect control cubicle the same period on bus; connect the hands off device, can two sections buses in parallel.
High pressure combining system 2 comprises high-tension switch cabinet, bus and feeder system, and feeder system is comprised of six high-pressure diesel generating set parallel connection by using control cubicles and an integrated console.
When the generating set parallel connection by using mode is worked, start six units after receiving enabling signal simultaneously, six unit parallel operation operation, parallel operation control system automatic detecting machine group power output size now, and control the number of units of the unit that puts into operation according to the power output size.
The mains supply comes out signal, after delay confirmation, cuts away the unit output switch automatically, autostop after the unit no-load running 5-10min of operation.
When the diesel engine unit of an operation breaks down, system can normally start all the other diesel engine unit and can parallel operation move.
Non-electricity protecting device 4 comprises two sections composite voltage locking memory overcurrent protections, overload protection, negative phase-sequence overcurrent protection, zero sequence overcurrent, overvoltage protection, under-voltage protection, low-and high-frequency protection, PT break alarm.
Certainly, above diagram is only the utility model better embodiment, not with this, limits the scope of application of the present utility model, therefore, everyly make equivalent change all should be included in protection range of the present utility model on the utility model principle.
Claims (7)
1. the electric power system of one kind many high-power high voltage diesel engine generator sets in parallel operation, comprise: high-pressure diesel generating set (1), high pressure combining system (2), comprehensive protector (3), non-electricity protecting device (4), PT cabinet (5) and earthing resistance cabinet (6), it is characterized in that: described electric power system is provided with six high-pressure diesel generating sets (1), wherein power supplys are commonly used in five conducts, one as stand-by power supply, one to five is parallel to the first paragraph bus, the 6th is connected on separately on the second segment bus, be provided with mother and protect control cubicle the same period on bus, connect the hands off device, can two sections buses in parallel.
2. the electric power system of a kind of many high-power high voltage diesel engine generator sets in parallel operation according to claim 1, it is characterized in that: described high pressure combining system (2) comprises high-tension switch cabinet, bus and feeder system, and described feeder system is comprised of six high-pressure diesel generating set parallel connection by using control cubicles and an integrated console;
When the generating set parallel connection by using mode is worked, start six units after receiving enabling signal simultaneously, six unit parallel operation operation, parallel operation control system automatic detecting machine group power output size now, and control the number of units of the unit that puts into operation according to the power output size;
The mains supply comes out signal, after delay confirmation, cuts away the unit output switch automatically, autostop after the unit no-load running 5-10min of operation;
When the diesel engine unit of an operation breaks down, system can normally start all the other diesel engine unit and can parallel operation move.
3. the electric power system of a kind of many high-power high voltage diesel engine generator sets in parallel operation according to claim 1; it is characterized in that: described comprehensive protector (3) adopts microcomputer type engine differential protection, comprises the Threshold Crossing Alert of poor stream, differential quick-break, band CT breakage lock device percentage differential, CT burn out detection and locking, non electrical quantity protection, logout, RS485 communication interface.
4. the electric power system of a kind of many high-power high voltage diesel engine generator sets in parallel operation according to claim 1; it is characterized in that: described non-electricity protecting device (4) comprises two sections composite voltage locking memory overcurrent protections, overload protection, negative phase-sequence overcurrent protection, zero sequence overcurrent, overvoltage protection, under-voltage protection, low-and high-frequency protection, PT break alarm.
5. the electric power system of a kind of many high-power high voltage diesel engine generator sets in parallel operation according to claim 1, it is characterized in that: described PT cabinet (5) comprises voltage transformer pt, isolation knife, fuse and lightning arrester.
6. the electric power system of a kind of many high-power high voltage diesel engine generator sets in parallel operation according to claim 1, it is characterized in that: described earthing resistance cabinet (6) is for limiting the generator neutral point earth current.
7. the electric power system of a kind of many high-power high voltage diesel engine generator sets in parallel operation according to claim 2, it is characterized in that: described integrated console, comprise load distribution module and communication module, automatically adjust the quantity of the unit that puts into operation according to the amount of capacity of load, realize that parallel operation, the load to generator controlled, remote operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320473105 CN203352196U (en) | 2013-08-05 | 2013-08-05 | Power supply system for parallel operation of multiple large-power high-voltage diesel generator sets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320473105 CN203352196U (en) | 2013-08-05 | 2013-08-05 | Power supply system for parallel operation of multiple large-power high-voltage diesel generator sets |
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| CN203352196U true CN203352196U (en) | 2013-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320473105 Expired - Fee Related CN203352196U (en) | 2013-08-05 | 2013-08-05 | Power supply system for parallel operation of multiple large-power high-voltage diesel generator sets |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762715A (en) * | 2013-12-23 | 2014-04-30 | 华信邮电咨询设计研究院有限公司 | Parallel operation and load switching control method of 10kV generator set |
| CN104348183A (en) * | 2013-08-05 | 2015-02-11 | 广东西电动力科技股份有限公司 | Power supplying system with multiple large-power high-voltage diesel generating sets in parallel operation |
| CN108614414A (en) * | 2018-06-07 | 2018-10-02 | 江苏道康发电机组有限公司 | Large-scale data center generating set dynamic redundancy control system |
| CN112290587A (en) * | 2020-10-12 | 2021-01-29 | 辽宁红沿河核电有限公司 | Operation control method and speed regulation controller of diesel generator set |
| CN113381506A (en) * | 2021-05-13 | 2021-09-10 | 中国电建集团华东勘测设计研究院有限公司 | Double-diesel power generation and distribution system suitable for offshore booster station and control method |
-
2013
- 2013-08-05 CN CN 201320473105 patent/CN203352196U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104348183A (en) * | 2013-08-05 | 2015-02-11 | 广东西电动力科技股份有限公司 | Power supplying system with multiple large-power high-voltage diesel generating sets in parallel operation |
| CN103762715A (en) * | 2013-12-23 | 2014-04-30 | 华信邮电咨询设计研究院有限公司 | Parallel operation and load switching control method of 10kV generator set |
| CN108614414A (en) * | 2018-06-07 | 2018-10-02 | 江苏道康发电机组有限公司 | Large-scale data center generating set dynamic redundancy control system |
| CN112290587A (en) * | 2020-10-12 | 2021-01-29 | 辽宁红沿河核电有限公司 | Operation control method and speed regulation controller of diesel generator set |
| CN113381506A (en) * | 2021-05-13 | 2021-09-10 | 中国电建集团华东勘测设计研究院有限公司 | Double-diesel power generation and distribution system suitable for offshore booster station and control method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20180805 |
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| CF01 | Termination of patent right due to non-payment of annual fee |